we get the developing news from ktvu's amber lee. she's live in the city with what we know about the alleged assault and some initial reaction, amber. >> reporter: ken, news that the 49 wide receiver is being investigated for sexual assault comes as a surprise to the 49 fans we spoke to here at momo's tonight. the 25-year-old is having what some would characterize a break out season after being drafted by the 49 in 2009. the alleged assault happened in a san francisco early last sunday just hours after the 4- 9ders played the packers. police did not name the hotel just a short while ago a spokesman for the police department told us investigators interviewed crabtree who had an attorney with him and said the football player was cooperative. >> at this point he has not been detained or arrested. to my knowledge he was on the plane with the rest of the 49ers today in atlanta ready to play the game on sunday. >> reporter: we found these 49er fans at momo's they told us they want more details before they jump to any conclusions. >> i thin